This age-appropriate Ultimate Inventor Toolkit encourages children to explore a wide variety of engineering concepts and solve real-world problems. The teacher-developed project guide and extensive supply of building materials provide hours of open-ended exploration. STEM TOYS FOR ENGINEERING: This toolkit focuses on the engineering component of STEM (science, technology, engineering, mathematics)., MODEL KIT BUILDING CHALLENGES: The Ultimate Inventor Toolkit's building challenges promote creative and innovative problem solving as they create, ULTIMATE INVENTOR SCIENCE KIT SUPPLIES: Each Toolkit comes with 250+ building materials, 10 building challenges and an activity guide., BUILDING GUIDE AND BEYOND: Along with the challenges provided, students can invent and build their own masterpieces! WHAT'S INCLUDED: 250+ building materials, 10 Building Challenges, and Activity Guide. Imported, Age: 8 years & up, Model no. 93729, Paper, wood, fabric, plastic, 4" x 9" x 11", Wipe clean. Gift Givers: This item ships in its original packaging. If intended as a gift, the packaging may reveal the contents. Size: One Size. Color: Multi. Gender: unisex. Age Group: kids. Material: NONE.